General Commands of Aix

8/10/2019 General Commands of Aix

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id- displays the system identity of theuser

lslicense- list maximum number ofusers

last- information about previouslogins

w- lists summary of current users who- displays information about all

current users uname- displays system info

type- shows path location

whereis- shows path location

what- displays header informationabout the source file

whatis- displays a short description ofa function

basename- returns the base filename

ac- displays connect time date- displays or sets the date

timex- displays the elapsed time

cmp- compares two files

diff- compares text files

heador tail- display start or end offile

od- dumps the contents of a file

split- makes smaller files from a large

one cut- cuts out selected text

tr- translates characters

sed- stream edit command to changetext

nl- produces an OUTPUT file byinserting the line number

captoinfo- converts termcap toterminfo

nvdmetoa- convert EB!" files to#$""

sum- displays checksum for a file

errclear- deletes entries in the errorlog

errpt- generates an error report

diag- performs hardware problemdeterminatio

trace- kernel debugging

at- schedules %obs

batch- run & or more %obs in thebackground

nice- execute a command at a lowerpriority

tee- used to preserve output from apipeline

find- finds f iles with matchingexpressions

grep- searches a file for a pattern

login logout

su- switch user

kill- stop a process

stopsrc- gracefully shuts down allsubsystems

shutdown- shutdown system

fastboot- restarts the system withoutrunning fsck

fasthalt- halts the system

lsitab- list contents of the 'etc'inittabfile

rmitab- removes an entry from the'etc'inittab

telinit- forces the init process to re-read the 'etc'inittab

strip- removes symbol table xargs- constructs an argument list

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http://www.ahinc.com/aix/general.htm#idhttp://www.ahinc.com/aix/general.htm#lslicensehttp://www.ahinc.com/aix/general.htm#lasthttp://www.ahinc.com/aix/general.htm#lasthttp://www.ahinc.com/aix/general.htm#whttp://www.ahinc.com/aix/general.htm#whohttp://www.ahinc.com/aix/general.htm#unamehttp://www.ahinc.com/aix/general.htm#unamehttp://www.ahinc.com/aix/general.htm#typehttp://www.ahinc.com/aix/general.htm#whereishttp://www.ahinc.com/aix/general.htm#whereishttp://www.ahinc.com/aix/general.htm#whathttp://www.ahinc.com/aix/general.htm#whatishttp://www.ahinc.com/aix/general.htm#basenamehttp://www.ahinc.com/aix/general.htm#basenamehttp://www.ahinc.com/aix/general.htm#achttp://www.ahinc.com/aix/general.htm#achttp://www.ahinc.com/aix/general.htm#datehttp://www.ahinc.com/aix/general.htm#datehttp://www.ahinc.com/aix/general.htm#timexhttp://www.ahinc.com/aix/general.htm#cmphttp://www.ahinc.com/aix/general.htm#diffhttp://www.ahinc.com/aix/general.htm#headhttp://www.ahinc.com/aix/general.htm#headhttp://www.ahinc.com/aix/general.htm#tailhttp://www.ahinc.com/aix/general.htm#tailhttp://www.ahinc.com/aix/general.htm#odhttp://www.ahinc.com/aix/general.htm#splithttp://www.ahinc.com/aix/general.htm#cuthttp://www.ahinc.com/aix/general.htm#cuthttp://www.ahinc.com/aix/general.htm#trhttp://www.ahinc.com/aix/general.htm#sedhttp://www.ahinc.com/aix/general.htm#nlhttp://www.ahinc.com/aix/general.htm#captoinfohttp://www.ahinc.com/aix/general.htm#nvdmetoahttp://www.ahinc.com/aix/general.htm#sumhttp://www.ahinc.com/aix/general.htm#errclearhttp://www.ahinc.com/aix/general.htm#errpthttp://www.ahinc.com/aix/general.htm#errpthttp://www.ahinc.com/aix/general.htm#diaghttp://www.ahinc.com/aix/general.htm#tracehttp://www.ahinc.com/aix/general.htm#athttp://www.ahinc.com/aix/general.htm#athttp://www.ahinc.com/aix/general.htm#batchhttp://www.ahinc.com/aix/general.htm#batchhttp://www.ahinc.com/aix/general.htm#nicehttp://www.ahinc.com/aix/general.htm#nicehttp://www.ahinc.com/aix/general.htm#teehttp://www.ahinc.com/aix/general.htm#findhttp://www.ahinc.com/aix/general.htm#grephttp://www.ahinc.com/aix/general.htm#loginhttp://www.ahinc.com/aix/general.htm#logouthttp://www.ahinc.com/aix/general.htm#suhttp://www.ahinc.com/aix/general.htm#killhttp://www.ahinc.com/aix/general.htm#killhttp://www.ahinc.com/aix/general.htm#stopsrchttp://www.ahinc.com/aix/general.htm#shutdownhttp://www.ahinc.com/aix/general.htm#fastboothttp://www.ahinc.com/aix/general.htm#fastboothttp://www.ahinc.com/aix/general.htm#fasthalthttp://www.ahinc.com/aix/general.htm#lsitabhttp://www.ahinc.com/aix/general.htm#lsitabhttp://www.ahinc.com/aix/general.htm#rmitabhttp://www.ahinc.com/aix/general.htm#telinithttp://www.ahinc.com/aix/general.htm#telinithttp://www.ahinc.com/aix/general.htm#striphttp://www.ahinc.com/aix/general.htm#xargshttp://www.ahinc.com/aix/general.htm#xargshttp://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#idhttp://www.ahinc.com/aix/general.htm#lslicensehttp://www.ahinc.com/aix/general.htm#lasthttp://www.ahinc.com/aix/general.htm#whttp://www.ahinc.com/aix/general.htm#whohttp://www.ahinc.com/aix/general.htm#unamehttp://www.ahinc.com/aix/general.htm#typehttp://www.ahinc.com/aix/general.htm#whereishttp://www.ahinc.com/aix/general.htm#whathttp://www.ahinc.com/aix/general.htm#whatishttp://www.ahinc.com/aix/general.htm#basenamehttp://www.ahinc.com/aix/general.htm#achttp://www.ahinc.com/aix/general.htm#datehttp://www.ahinc.com/aix/general.htm#timexhttp://www.ahinc.com/aix/general.htm#cmphttp://www.ahinc.com/aix/general.htm#diffhttp://www.ahinc.com/aix/general.htm#headhttp://www.ahinc.com/aix/general.htm#tailhttp://www.ahinc.com/aix/general.htm#odhttp://www.ahinc.com/aix/general.htm#splithttp://www.ahinc.com/aix/general.htm#cuthttp://www.ahinc.com/aix/general.htm#trhttp://www.ahinc.com/aix/general.htm#sedhttp://www.ahinc.com/aix/general.htm#nlhttp://www.ahinc.com/aix/general.htm#captoinfohttp://www.ahinc.com/aix/general.htm#nvdmetoahttp://www.ahinc.com/aix/general.htm#sumhttp://www.ahinc.com/aix/general.htm#errclearhttp://www.ahinc.com/aix/general.htm#errpthttp://www.ahinc.com/aix/general.htm#diaghttp://www.ahinc.com/aix/general.htm#tracehttp://www.ahinc.com/aix/general.htm#athttp://www.ahinc.com/aix/general.htm#batchhttp://www.ahinc.com/aix/general.htm#nicehttp://www.ahinc.com/aix/general.htm#teehttp://www.ahinc.com/aix/general.htm#findhttp://www.ahinc.com/aix/general.htm#grephttp://www.ahinc.com/aix/general.htm#loginhttp://www.ahinc.com/aix/general.htm#logouthttp://www.ahinc.com/aix/general.htm#suhttp://www.ahinc.com/aix/general.htm#killhttp://www.ahinc.com/aix/general.htm#stopsrchttp://www.ahinc.com/aix/general.htm#shutdownhttp://www.ahinc.com/aix/general.htm#fastboothttp://www.ahinc.com/aix/general.htm#fasthalthttp://www.ahinc.com/aix/general.htm#lsitabhttp://www.ahinc.com/aix/general.htm#rmitabhttp://www.ahinc.com/aix/general.htm#telinithttp://www.ahinc.com/aix/general.htm#striphttp://www.ahinc.com/aix/general.htm#xargshttp://www.ahinc.com/aix/general.htm#top


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!isplays connect timetotals for users

Example:ac rootOutputs:total ()*+, seconds

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at

Schedules jobsto run at a later date

Examples What it does

1) at 17:002) banner CALL !"E# $de%$tt&0

') (

#t (,, p*m*. message #// 0O1E is written to terminal tty,

1)at 1*:002) ma+e ,-

$u$ro.er$ma+e-ile') (

ompiles files specified in 'u'roger'makefile* 2esults of thiscompilation are sent to user3s mailbox who initiated the 3at3 re4uest*

at ,l /ist %obs in at 4ueue*root*5+5+(+67,*a 1on Oct ,8 &)(9,, &99&

at ,r root/***'0/a 2emoves a %ob from at 4ueue*at file root*5+5+(+67,*a deleted

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basename

2eturns the base file name of a string

Exampleecho 3basename 43p5d4332eturns the name of the current directory your in* !oes not show the full pathname of thatdirectory*

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batch

2un & or more %obs in the background* #ll output will be sent to the mail system* :obs submittedare started immediately*
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Example

batchjob1job2(

;ote Once a batch %ob starts. it3s %ob number can6tbe seen via the at ,lbecause that %ob is nolonger in the batch 4ueue - it3s a running process*


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file

root,daemon&bin)lpd&,7

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date

!isplays or sets the date'time* !ate format is mmdd""/SS&&

Example:date 020'0*'0/00=This sets the date'time to


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errclear

!eletes entries in the error log

Exampleerrclear 0=Truncates the errlog to , bytes?

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errpt

Generates an error report from entries in the error log


errpt ,a9p. Produces a detailed report for each entry in the error log

errpt ,a; hdis+1 !isplays an error log for #// errors occurred on this drive* "fmore than a few errors occur within a )7 hour period. executethe E2T"


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0alts the system

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-ind


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.rep

$earches a file for a pattern* Grep stands for Global 2egular Expression Printer


.rep ,i Where=s $earch all files in current directory to determine if the string 3@here"s3is contained within it* The -i option ignores the case of letters =@here"sis same as whereis?

lsde% ,C9.rep lp /ist all configured printers

.rep M0,NMA,ON /doc /ist any file that has a *doc suffix that contains a number =,-9? followedby a capital letter =#-H?*

.rep M(0,NMA,ON /doc /ist any file that has a *doc suffix that contains any number except , to

( and is followed by a capital letter =#-H?

.rep P(=Q"P /doc !isplays lines that BEG"; with the word "B1

.rep P=Q"RP /doc !isplays lines that E;! with the word "B1

.rep P(=Q" is @?EABRP/doc

!isplays only those lines that consist of the phrase 3"B1 "$ G2E#T3

.rep ,% P( RP test-ile #

.ood-ile2emoves all the blank lines from the source file 3testfile3 and redirectsthe output to a new file named 3goodfile3*

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head

!isplays the first &, lines =default? of a file*

Example:head ,2 $tmp$phase2/out=!isplays the first )( lines of the file 'tmp'phase)*out*?

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id

!isplays the system identity of the user


id uidI,=root? gidI,=system?
http://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#top


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id ,ru !isplays the U"! of the current login process ,

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last

!isplay information about previous logins stored in the 'usr'adm'wtmp accounting file


last reboot9head , /ist last ( times systems has been rebooted

last ro.er !isplay times user roger has logged in'out of the system

last tt&0 !isplay times users have logged in'out of port tty,

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lo.in

"nitiates a new user session*

Example:lo.in ,h rs000 root/ogin to the root account on a machine whose hostname is rs5,,,

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lo.out

Terminates all processes on the port your logged in on. including your login shell* ;ote exitwillperform the same action as lo.out*

Examplelo.out/ogs you off the system* /ogin prompt will reappear*?

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lsitab

/ist contents of the 'etc'inittab file

Example:lsitab ,a
http://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#top


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lslicense

/ist maximum number of users that can be concurrently logged in

Example:lslicenseOutputs: 1aximum number of concurrent users J6)

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+ill

$ends a signal to stop or suspend a process from running

Example:+ill ,l/ists valid signals to use with the kill command*?

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nl

Produces an output file by inserting the line number of each line of an input file at the beginning ofeach line

Example:nl $etc$pass5d # $tmp$user/list

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nice

Execute a command at a lower priority* $uper-user may run commands with a higher priority byusing a negative number* 0igher numbers mean lower priorities =base priority is &,?


nice ,n 1 ma+e 2un the 3make3 command at the low priority of &(

nice ,10 $usr$bin$m%ie5 2un the 3mview3 application at a high priority of &,

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n%dmetoa

onvert EB!" files to #$""


n%dmetoa AS00/dat#A=T%er'/dat

onverts an EB!" file taken off an #$7,, and converts to an #$""file for the 2$'5,,,

n%dmetoa 1'2AS00/txt #A=T%er'/txt

onverts an EB!" file with a record length of &6) characters to an#$"" file with &6) bytes per line P/U$ & byte for the linefeedcharacter*

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od

!umps the contents of a file in the re4uested format =#$"".octal. hex. or extended character set?


od ,c $tmp$rc/net/out ,cdisplays bytes as ascii characters

1) od ,cd2)4D;CB=!; >E#')4S=B#D;CB=!; >E#)4ALB#D;CB=!; >E#

By typing in this command. one may check the controlcodes being generated by function keys*


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cat $tmp$m&test 9 sed ,ePs$reports$report$P # $tmp$m&test

#ll instances of the string LreportsL is replaced with thestring LreportL for the file named 'tmp'mytest

sed ,e 6s$ R$$6 S!D?CE


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strip

2emoves symbol table and other Extended ommon Ob%ect


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!isplays the last &, lines =default? of a file*

Example:tail $tmp$phase2/out

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tee

Used to preserve intermediate outputfrom within a pipeline to a file for later processing or review

Example:-ind / ,cpio $de%$-d0 ,print 9 tee $tmp$QAC>DK/L!@# list of the files backed up by the cpio command will be saved by the tee utility in a file named'tmp'B#CUP*/OG

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telinit


telinit U


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tr 6V6 640126 $tmp$!S=LE #$tmp$D;=T=LE

2eplace the tilde as a !E/"1"TE2 character in file !O$


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command

SS$ubmodel number* #lways ,,

uname ,r% -rIrelease. -vIversion/ 2esults ) 6 =Dersion 6 2elease )?

uname ,S

3hostname3

$ince the system name can be set in two places =hostname and uname -$?.

%ust set them to the same string*

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5

/ists summary of current user activity

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5hat

!isplays header information about the source files re4uired to build the executable file yourreviewing. timestamps as to when the source files where compiled. their build level. and so on*

Example:5hat $unix

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5hatis

!isplays a short description of the function a command performs

Example:5hatis %mstatOutputs: vmstat=&? - 2eports virtual memory statistics*

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5hereis

$hows path location of the specified command

Example:5hereis motdOutputs: motd 'etc'motd
http://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#tophttp://www.ahinc.com/aix/general.htm#top


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5ho

!isplays information about all users currently on local system* @hen you log in. the login programwrites a record in the 'etc'utmp file* This record includes your user name. date. time of login. andthe login tty'pts device* The 5hocommand checks this file to find out which users are currentlylogged in. along with the hostname and display terminal they are logged under*


5ho ,b !isplays date system was last booted system boot ;ov&8 &6(+

5ho ,r !isplays run-level of machine

5ho ,u !isplays information about users currently logged in*

The line activity field will E"T0E2 have***

a dot =*? if there has been activity on theterminal within the past minute O2

the number of hours'minutes since activity lastoccurred O2

is marked with 3old3 if the line has been 4uietfor more than )7 hours*

5ho ,a $usr$adm$5tmp !isplays the name. terminal. and date users loggedinto the system

5ho ,u $etc$securit&$-ailedlo.in !isplays the account. terminal and date that a failed

login was attempted*

$usr$lib$acct$-5tmp $usr$adm$5tmp# $tmp$ACCB/=;!

reates an #$"" version of the 'usr'adm'wtmp file thatcan be read by the system administrator

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xar.s

onstructs an argument list and executes a command


-ind $u$netinst ,print 9 xar.s chmod 00


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General Commands of Aix

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